Such a fistula may be the anastomosis of a natural artery and vein, a bovine graft, or a synthetic polytetrafluoroethylene (PTFE) graft. The bovine graft is taken from the bovine carotid artery and anastomosed to the vein and artery of the patient.
Definition of verify. verified. ; verifying. transitive verb. 1 : to confirm or substantiate in law by oath. 2 : to establish the truth, accuracy, or reality of verify the claim.
Definition of check. 1  transitive verb. 2  1 : to put (a chess king) in check. 3  2 chiefly dialectal : rebuke, reprimand.  3a : to slow or bring to a stop : brake hastily checked the impulseb : to block the progress of (as a hockey player)